如何在C＃中从另一个表单访问一个对象？(How to access one object from another form in C#?)

如何在C＃中从另一个表单访问一个对象？(How to access one object from another form in C#?)

假设我有“Form1”和“Form2”，两者都是表格。 在Form1中有Main Class和Main方法。

在Form1中，我创建了一个对象，如：

public myobject ob1 = new myobject();

但是，在Form2中，我有这个代码：

private void bdCancelar_Click(object sender, EventArgs e) { ob1.status = 1; // I can't access ob1 !!! }

有帮助吗？

谢谢。

Let's say I have "Form1" and "Form2", both are forms. In Form1 there are the Main Class and the Main method.

In Form1 I create an object like:

public myobject ob1 = new myobject();

But then, in Form2, I have this code:

private void bdCancelar_Click(object sender, EventArgs e) { ob1.status = 1; // I can't access ob1 !!! }

Any help ?

Thanks.

最满意答案

您需要Form1的实例。 通常，如果您已显示此表单， Form1 form1 = new Form1()实例化它（ Form1 form1 = new Form1() ）。 然后，您可以对此实例进行操作并访问公共成员：

form1.ob1.status = 1;

另一种可能性是让你的Form2构造函数采用Form1实例：

public class Form2: Form { private readonly Form1 _form1; public Form2(Form1 form1) { _form1 = form1; } private void bdCancelar_Click(object sender, EventArgs e) { _form1.ob1.status = 1; } }

然后当你在Form1中的某个地方并想要创建和显示Form2 ：

var form2 = new Form2(this); form2.ShowDialog();

You need an instance of Form1. Normally if you have displayed this form you have instantiated it (Form1 form1 = new Form1()). Then you could operate on this instance and access public members:

form1.ob1.status = 1;

Another possibility is to have your Form2 constructor take a Form1 instance:

public class Form2: Form { private readonly Form1 _form1; public Form2(Form1 form1) { _form1 = form1; } private void bdCancelar_Click(object sender, EventArgs e) { _form1.ob1.status = 1; } }

and then when you are somewhere inside Form1 and want to create and show Form2:

var form2 = new Form2(this); form2.ShowDialog();